This trial is for various types of malignancies which may depend on certain enzymes (tyrosine kinases) for growth. The objective of this study is to assess to what extent imatinib mesylate blocks these enzymes and to assess the effect on the malignancy.

Diverse malignancies either associated with or thought to be associated with activated tyrosine kinase enzymes including hypereosinophilic syndrome systemic mastocytosis chronic myelomonocytic leukaemia, dermatofibrosarcoma protuberans and other diseases.

Patient has previously been treated with imatinib mesylate except where treatment was more than 6 months previously and there is no suggestion of clinical resistance nor lack of response.

Other protocol-defined inclusion / exclusion criteria may apply.

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00171912